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Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.

Automakers donating money, vehicles and supplies to Oklahoma tornado relief effort

Judging by the destruction the Oklahoma City area experienced earlier this week, residents are going to need a lot of help in coming months. Fortunately, a number of automakers - including General Motors, Ford, Chrysler, Volkswagen, Honda and Toyota - have stepped up to donate money, supplies and vehicles to aid in the recovery and rebuilding processes.
Here's a quick rundown of which automakers have pitched in and what each contributed so far:
Ford Motor Company has donating $250,000 and a Transit Connect to the American Red Cross, and it will match all other donations made to the Red Cross (up to $250,000) using a special URL tied to the latter's website (link here). Additionally, its local Oklahoma dealers have thrown in an extra $150,000 for the United Way and the automaker will be offering an extra $500 toward the purchase of a new Ford vehicle.

2019 Subaru Forester Sport vs 2019 Toyota RAV4 Adventure: How they compare

The 2019 Toyota RAV4 is not only completely redesigned, but reimagined as well. As we detailed in our first drive review, the new RAV4 ditches the more car-like and uber-utilitarian nature of its predecessor for something that's more SUV-like and characterful. It's a new direction exemplified in the RAV4 Adventure trim, which specifically targets those folks who plan to actually take their compact crossover to the great outdoors. People who will get it dirty, use the extra ground clearance and store things on the roof. You know, the sort of people who would consider the 2019 Subaru Forester. It too is redesigned for 2019, but its transformation is almost unnoticeable compared to the RAV4's. Forester customers were obviously quite happy with the way things were. We got a chance to drive both the 2019 RAV4 and 2019 Forester back-to-back last week both on-road and off-road, so let's take a look at how they compare, including a look at their on-paper specs. 2019 Toyota RAV4 Adventure View 31 Photos Performance and fuel economy The Forester got a new, more powerful 2.5-liter flat-four engine for 2019, and it now comes standard with a continuously variable transmission. It produces 182 horsepower and 176 pound-feet of torque, which is pretty much mid-pack among compact crossovers. Crucially, though, throttle response is so sharp that it makes the Forester actually feel quicker than it is when accelerating from a stop — a sensation enhanced even further by selecting the Sport Sharp mode button on the steering wheel. However, in either mode, the engine's remarkable power reveals itself as the tachometer and speedometer wind toward higher digits. One must also deal with the Forester's CVT. Perhaps some may appreciate the smooth, uninterrupted acceleration that results from a lack of gear changes (nor even simulated ones as in some other company's CVTs), but others may find it unusual and irritating. Subaru's CVT is certainly not our favorite example. By contrast, the 2019 RAV4 is conventional with its 2.5-liter inline-four engine and eight-speed automatic transmission, which behaves just as normally and effectively as one expects. The RAV4 is also considerably more powerful at 203 hp and 184 lb-ft — both compared to the Forester and to the entire segment as well. As a result, its acceleration is stronger (likely a difference of a half-second in 0-60-mph time) even if it may not initially feel like it.